Rotary valve.



E, TOBELER. ROTARY VALVE.

APPLICATION FILED JAN. 24 191?.

Patented Feb. 12, 1918.

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Silicium,

E. TOBELER.

ROTARY VALVE.

APPLICATION man 1AN.24.19|J.

Patented Feb. 12,1919.

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j @MTD STATES PAENT @FFICE EMIL TOBELER, OF DETROIT, MICHIGAN.

ROTARY VALVE.

Application filed January 24, 1917.

To all 'whom may concern:

Be it known that I, EMIL ToELER, a subject of the Emperor of Germany, and resident of Detroit, in the county of Vayne and State of Michigan, have invented certain new and useful Improvements in Rotary Valves, of which the following is a specification.

The present invention has reference, generally, to internal combustion engine valves; and, the invention relates, moi'e particularly, to an improved cooling means therefor.

The invention has for its principal object to provide cooling means for internal combustion engine valves, whereby, the same will loe prevented `from overheating due to the constant subjection of the same to the explosions occurring within the combustion chambers of the engine cylinders, and the passage of the heated exhaust gases therethrough into the exhaust manifold.

It is also an object of my invention to provide novel means for inducing and circulating the valve cooling medium therethrough in a manner as will insure the proper functioning of the said valve at all times.

All of the foregoing together with additional advantageous details and arrangements of parts of the preferred embodiment of my invention will appear from the speciiic description hereinafter contained, when read in connection with the accompanying drawings forming a part thereof, wherein said embodiments of the invention is illustrated for the purpose of facilitating a full understanding of the present improvemcnts.

In the drawings:

Figure l is a horizontal section through my improved valve;

Fig. 2 is a side elevation of the same;

FigjS is a fragmentary vertical section taken through the valve and valve chamber showing the mounting cf the same; and

Fig. 4 is a fragmentary horizontal section through the valve chamber of a cylinder showing the positioning of the valve therein, parts of the valve being broken away and shown in section.

Similar characters of reference are employed in all of the above described views to indicate corresponding parts.

Referring now more specifically to the several figures of the said drawings there Specification of Letters Patent.

Patented Feb. 12, 1918.

Serial No. 144,196.

is provided a hollow rotatable cylindrical valve indicated in its entirety by the numeral 1, the valve being seated for rotation within a suitable valve chamber as formed within the cylinder head 2 the said chamber being indicated by the numeral 3. As will be noted, an intake port 4 is formed within the cylinder head and has interposed therein a portion of the intake valve l, the valve being provided with a plurality of ports 5, whereby, the same may be used for timing the passage of the combustible gases to a multiple cylinder engine, the port, as will, be appreciated, intermittently alining with the various intake ports and as a consequence, permitting the proper intaking of the lcombustion charge into the combustion chamber of the engine. An exhaust port, not shown, is formed within the opposite side of the cylinder head 2 and has interposed therein an exhaust valve 1, the adjacent port as formed therein being adapted to aline with the exhaust port at predetermined intervals whereby to efficicntly discharge the spent or exhaust gases into the exhaust manifold of the engine.

As is usual in the construction of internal combustion engines, there is arranged about the cylinders of the same a water jacket 7, suitable openings being formed within the jacket, whereby the ingress and egress of the cooling medium will be permitted. Obviously, by providing the water circulating jacket 7, the cylinders of the engine will be prevented from overheating, due to the constant explosion of the gases within the same.

lVith a view toward providing means whereby the hollow cylindrical valve 1 will be sutiiciently cooled, there is engaged with the outer face of the cylinder at a point adjacent one end of the valve chamber 3 a cap 8, which member may be secured in position through the medium of bolts or other similar fastening devices which are passed through the Vliange 9 as formed upon the said cap. An axial opening is formed within the cap 8 and receives therethrough a water supply pipe 10, which pipe extends approximately throughout the length of the said valve and is secured in position with relation to the same by means of a stuthng gland 11, the stuffing gland in turn, being engaged with an internally screw threaded extension l2 formed upon the outer portion of the cap 8. The outer end of the supply pipe 10 may be engaged with any suitable source of supply, whereby water or other cooling medium may be furnished thereto and if desired, may be capped into the water circulating jacket 7 as arranged about the engine cylinders.V A lischarge port 13is formed withinl the cap 8 and communicates with the interior of the cylindrical valve 1, whereby, when the water as discharged thereinto from the supply pipe 10 has been circulated therethrough, the same will be then taken off by wayof' the'said discharge 18 and returned to its source'of' supply for cooling. In this connection, it is to'b'e also appreciated,that if I so desire, I may cap the discharge end of the said port 18 into' the water circulating jacket 7 of the engine cylinder or ifnot, may extend the saine together with the supply for the pipe 10 into engagement with the usual cooling ra'diator as commonly einployed upon motor driven vehicles.

Inorder that the valve 1 will be properly supported within the chamber or chambers 3 therefor', one extremity of the same is internally screw threaded asv at 14 and is adapted t`o have turned into engagement therewith a complementally threaded plug 15, thesaid plug carrying thereupon a bean ing spindle 16 adapted for reception within a suitable bearing formed within one side wall of the cylinder head 2. Suitable gearing, not shown, is arranged upon the outer extremity ofthe bearing spindle 16 and is adapted to be connected with the crank shaft of the engine, whereby, the valve will be properly` rotated to permit the accurate timingof the same. j

The marginal edge of' the remaining end of the' cylindrical valve 1 is widened as at 17 andflias formed therein an annular groove 18', which grooveis adapted to receive an annular projection 19'as formed upon an annular cap 20, which cap is slidably received upon the outer faces of oppositely disposed annular walls 21 formedintegral with the cap S and projecting laterally therefrom. Expansible coiled springsl 22 are received between the annular cap 2O and t'heannular walls 21 of the cap 8. Thus, by reason of theixed engagement of the capQS with relation to the valve chamber 3 of the engine, the annular cap 2O will be forced outwardly by reason of the coiled springs 22, causing the projection 19 to be snugly seated within the groove 18 arranged in the marginal edge of the thickened portion 17 of the said valve 1. By such engagement, the fluid tight connection between the annular cap and the valve 1 is provided and as a consequence, the water or other cooling medium as being circulated through the valve 1 will be'prevented from leakingv onto the valve chamber or the cylinders of the engine. l

Althougli'I have inthe above description, specifically referred to my improved valve as being of the rotatable type, it will be understood, that the improvements are not limited to this particular form of valve, but may be applied to any form of hollow cylindrical valve in=which, it is desirable to provide means for cooling or maintainng the same at an even temperature.

As hereinbefore indicated, I do not wish to be understood as confining the invention to the particular embodiment chosen for illustration herein,y nor to' the exact con-- struction and arrangement and adaption of the parts shownand described, but I reserve the right to make any changes and altera tions that fairly fall within the spirit and scope of the invention.

I claim: v

In a hollow cylindrical engine valve, a Supply pipe, a cap for receiving and sup-v porting said supply pipe having a discharge opening therein and laterally projecting annular flanges formed upon one face thereof, A

a' cap having' an annular projection engaged with said annular flanges of the first mentioned cap, springs interposed betweenv said first and-second mentionedcaps for normally forcing the latter outwardly7 the adjacent ends ofthe hollow cylindrical valve being grooved to receive the annular projection arranged upon the second mentioned cap, as and for the purpose set forth.

In testimony whereof, I affix my signature hereto.

EMIL TOBELER.

Gopies @fr this patent may be obtained for ve cents each, by addressing the Commissioner of Patents.

Washington, D. C. 

